Perhaps you should try some spelling variations:
jiu congo » jiu cong, du congo, eic congo
wang yang » wang yan, wang liang, wang yanling
congo shu » cong shu
hua rene » hua ren, juan rene
rene yan » ren yan, rene ten, see yan
yan jiu » yang jie, yang jin, pang jiu
sin » sign, sind, skin

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang yang) OR (dong sin)) ya hua rene yan jiu congo shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yang) OR (dong sin)) ya hua rene yan jiu congo shu ;".
• Adding a wildcard symbol may retrieve word variants: ((wang yang) OR (dong sin)) ya hua rene yan jiu congo shu ;*.